Method
S-Flex Coupling Choice Process
The variety course of action for determining the right S-Flex coupling involves using the charts shown about the following pages. There are actually 3 elements to get chosen, two flanges and 1 sleeve.
Information and facts needed in advance of a coupling might be chosen:
HP and RPM of Driver or running torque
Shaft dimension of Driver and Driven products and corresponding keyways
Application or products description
Environmental conditions (i.e. extreme temperature, corrosive situations, room limitations)
Measures In Choosing An S-Flex Coupling
Step 1: Ascertain the Nominal Torque in in-lb of the application by utilizing 
the following formula:
Nominal Torque = (HP x 63025)/RPM
Step 2: Working with the Application Support Aspect Chart 1 decide on the service element which ideal corresponds to your application.
Phase 3: Calculate the Design Torque of your application by multiplying the Nominal Torque calculated in Phase one through the Application Services Issue established in Step 2.
Style Torque = Nominal Torque x Application Service Element
Phase four: Making use of the Sleeve Performance Data Chart 2 select the sleeve material which greatest corresponds to your application.
Phase 5: Working with the S-Flex Nominal Rated Torque Chart three locate the proper sleeve materials column for the sleeve chosen in Step four.
Phase 6: Scan down this column to your initial entry where the Torque Value in the column is higher than or equal towards the Design and style Torque calculated in Stage 3.
Refer on the maximum RPM value in the coupling size to be sure that the application requirements are met. In case the highest RPM value is much less compared to the application necessity, S-Flex couplings are certainly not suggested for the application.
Note:
If Nominal Torque is less than 1/4 from the coupling’s nominalrated torque, misalignment capacities are decreased by 1/2. The moment torque value is located, refer for the corresponding coupling size in the very first column from the S-Flex Nominal Rated Torque Data Chart 3 .
Stage 7: Assess the application driver/driven shaft sizes on the optimum bore size offered around the coupling selected. If coupling max bore just isn't massive sufficient for your shaft diameter, select the next biggest coupling that could accommodate the driver/driven shaft diameters.
Phase eight: Applying the Item Choice tables, obtain the suitable Keyway and Bore dimension needed and locate the number.
